Proportioning valve



lilllllllllllllll-llllllll f Feb. l23, 1932-.

I l. 4 /l G. R. BROWN ET AL PROPORTIONING VALVE Filed May 30, 1930 Gea ATTORN EYS i i *UNITED*` STA Y tioning valves such as Vfor :the two valves,

vment about acommon axis,

Patented Feb. 23, 1932 r. Naan, or CLEVELAND, onto,l AssINoRs 'fro vTHE Y vNorm-15 AMERICAN MANUFACTURING COMPANY, or CLEVELAND, oHro, A Cony PCRATICN or oHIo GEORGE n. BROWN ANDGECRGE g fr oFFi-CE YrnorolerroNiNG VALVE Application filed May 30, 1930. Serial No.v`457,6`31.

This invention relates to so-called proporare employed for proportioning and controlling combustible mixtures of gas andair.

Suchr a proportioning valve comprises in realityV a pair ofvalve units, one for inclu- Y sion in a gas, line, the other'for inclusion in a corresponding air line, the two valves being co-related to open and close together.. VGonveniently a commonvalve body is provided which are cylindrical and `aligned tor opening. and closing moveso that a single stem may be caused to (perate both by movele. In kaddition to opening and closing the valves together it is sometimes desirable that a lead be given to one of the valves, and such is an object of this invention.

gAlso, it is very desirable that means be provided for limiting the rmaximum passage area provided `by each valve in open posi- Vtion, and particularly for controlling each of thesey areas independent of the other and `suchis another object of this invention.

Still another object of the invention is to soV arrange the parts that th-e usual straightline characteristics particularly of' the gas valve, are not affected by the described limiting adjustment;

The invention also comprises the provision of valve means of the class described having further objects and advantages whichv will be apparent from the following description taken in connection with thel accompanying drawings, in which Figs. 1 and 2 are typical sections in elevation, at 9()O angles with each other, of a preferred embodiment .of our invention;-Fig. S'is `a top end view of the same; and Fig. 4 is a transverse section through the gas valve taken in the plane of line 4.-4, Figs. 1 and 2. With reference now to the drawings, the

V body of the proportioning valve comprises an air valve body l anda gasvalve body 2. Thevalve body lis generally cylindrical and hollowe'd` to provide a cylindrical chamber ,3 for theair valve 4; and similarly the gas vvalve body 2 is provided with a vcylindrical chamber 5 to receive the gasvalve' 6. The gas form therewith a and the chamber inlet and outlet V.air pipe line vfor connection in the .length of the nut vhead 21 valve body is lflanged as at 7 for y*assembly I unit wherein the chambers 3 and 5 arealigned 3 closed at its lower end by the gas valve body, Figs. l and 2. 4The gas valve chamber 5 is preferably closed by a cap 16. w

Ilhe valve body 1 is provided with opposed openings 8 and 9, flanged as and 9a for connection Vin an indicated at 8a provided with opposedinlet and outlet openings l and 11, and threadedat 12.A and 13 gas pipe. line. ascindicated atl: and 15. All of the valve body openings 8, 9,;10 and 11 will be recognized as valveports, and all are rectangular so that their opening and closing may have straightline characteristics.

rThe gas valveV 6 is generally cylindrical, litting its chamber and having a through transverse passage opening 17 The opening 17 is of rectangular section, of width coextensive with the openings and 11.v TWithin a nut 18. The uut is pro-f 'vided with cylindrical endrsurfaces'V correthe opening 17 is sponding with the valvev periphery, and the versely across the valve chamber 5 coextensive with the valve; the width of thenut is that of the valve passageopening'l7.` y.The dimension of thek valve is such that it may be lowered (Figs. 1 and 2) into the pocket 19 below the Zone of the ports 10 and 11, leaving the upper face of the nut in the plane of the lower port edges; or it may be adjusted upwardly as in the position shown to diminish the ett'ective area of the passage 17 between the ports.

In order to etect such adjustmentof the nut, the nut is provided with a central screwthreaded opening to receive a screwy 20 axial Aoi', the valve 6. The end of the'valve is provided with a central opening'toreceive the of the screw. Tha-tv the screw may be prevented from longitudinal movement in the valve it is necked down to form an annular groove 22 and a ranged in the valve to enter the groove.

is such thatit lits trans-v pin 23 is transversely ar-V with the air valve body 1 as indicated, to f proportioning valve tbody.

andsimilarly thebodyl 2 is nut longitudinal of the `'proximately that Vof the ports the pocket 31 is oi`,suiiicient ceiv-e the curtain members 32 clear .of the lwill tween the yoke 33 .rangedV about the Thus upon rotation of the screw by means of the ,head 21, accessible by removal of the cap 16, the nut 18, which is prevented from rotation by its contact with the valve 6, may be adjusted longitudinally of the valve Ito limit the effective port opening.

` it will be apparent that the secondary -valvey adjustment provided by the nut 18 has 'beyond the` air valve -body l as indicated.V `The screw 2O .may be arranged to bear in the endofthe rod 24 as indicated at 27. yRigidly secured with the projecting extremity of the stem 24, as pinned at 2S is an actuating handle 29. r l

The air valve-4 comprises an opposed pair of segmental skirt portions 30, .having straightedges so that the air valve as well as the gas valve will have `straight line opening and closing characteristics. The chamber 3, in dome fashion to provide a pocket 31,

extends beyond the zone of the ports 8 and 9.

Between. the skirt portions 30 of the air valve are al pairof curtain me1nbers32 carried by a yoke 33, the hub portion 34 of which is in screw-threaded relation with acurtainactuating member 35 disposed'inannular relation about the stem 24. The longitudinal dimension of the skirt members 32. is ap- 8 and 9, and depth to reports .8. and 9, as indicated Fig. l. Thus it be evident that angular adjustment beand its actuating member 35 will eect longitudinal adjustment of the curtain members 32 to limit the maXimum efective air passage through the air valve. 4Provision for such adjustment is made by a :head 36 arranged outside the valve body and to whichy the actuating member 35 extends. The upper extremity of the air valve bears upon the curtain-actuating.member 35 as at 37, and the air valve preferably is provided with a bearingas at 33` upon the stem 24 by lmeans of. a yweb 39. Springs 40 may be ar- `stem 24 as indicated to vmaintain the air valve partsLseated against the end of the air valve body. f That the air valve may be actuated by the handle 29, a'mernber 4lis `secured upon the end of Athe air valve casting extending beyondthe ,air valve body. The member 41 has an extension 42v beneath the lever 29, having apairof upstanding ears 43- one on either side of the lever. Into eachof these ears is threaded a bolt 44 and the bolts may be turned inwardly as indicated in Fig. 3 to lo- Acatel the angular relation of the air and gas valves; this relation being adjustable as will be apparent, by proper adjustment of the bolts 44. v

That the adjusted relation of the air valve and its curtains may be maintained regardless of the setting of the air valve, a screw 45 may be provided on the lever 29 with its projecting end received by an opening 46 in the head 36 of the curtain-actuating mem bia/1,35...

That the'handle 29 may be'y positively secured in any adjusted positinon,'it is prolvided with a bolt 47 which may be turned to engage the valve body as at 48; the member 42 having an elongated opening 49 to clear the bolt 47.

VWhat we claim is: f v 'f l. Proportioning valve means comprising a valve body, a pair of aligned valvestherein, one for air and the otherfor gas, :and actuating means for said valves .comprising a stem rigidly secured with the gas valve andl extending therefrom .through the air valve, a-handle rigidly secured on the air valveend of said stem, a sleeve for actuating said air valve, ing'therewith through 4the valve body end, and means for adjustably securing said handle with said sleeve t0 cause the valves to be moved together by operation of said handle, but to allow a'variable lead to one of said valves. j f

2. Proportioningvalve means comprising a valve body, a pair of aligned valves therein,

vone for air and the other for gas, curtain means associated with the air valve, and actuating means for said parts comprisinga stem rigidly associated with the gas valve and extending therefrom through the air valve, an actuating member Jfor said curtainmeans annularly disposed about said stem, a sleeve or actuating said air valve annularly disposed about said actuatingY member, said annularly disposed parts extending with said stem through the valve body end, said curtain actuating member havingl va. head for operator adjustment, a handle rigidly secured on said stem outside said-head, and means for adjustably securing said handle with said sleeve to cause the valves to be moved together by operation of said handle.

3. Proportioning valve means comprising a valve body, a pair of aligned valves therein one for air and the other for gas, curtain means associated with the air valve, and actuating means for said parts comprising a stem rigidly associated with the gas valve and eX- tending therefrom through the air valve, an actuating member for said curtain'means annularly disposed about said stem, a Vsleeve for actuating said air valve annularly disposed about said actuating member, said annularly disposed parts extending with said stem through the valve body end, said curarranged about said stem and eXtendios signatures.

tain actuating member having a head for operator adjustment, a handle rigidly secured on said stem outside said head, means for adjustably securing said handle `with said 5 sleeve to Cause the valves to be moved together by operation of said handle, and means for releasably securing said head for movement with said handle.

L In testimony whereof We hereby ax our GEORGE R. BROWN. Y GEORGE E. NAAR. 

